People on Instagram are obsessed with this $39 stick-on push-up bra

Instagram is obsessed with a stick-on push-up bra called the Sneaky Vaunt bra.

The bra comes with a drawstring that allows you to adjust how much cleavage you want.

The company says that the bra can be worn up to 40 times.

It costs $39.

If you're a frequent Instagram user, odds are you may have come across posts in your feed featuring a curious creation called the Sneaky Vaunt bra.

It's the stick-on, strapless bra with a drawstring in the front that lets you adjust for how much cleavage you want.

So what's the deal with this intimate?

Well, the idea is that it's supposed to disappear under backless, strapless, and spaghetti-strap tops and dresses, all while giving you your ideal cleavage.

How? By sticking to your boobs and drawing them inward.

According to the folks at Sneaky Vaunt, their bra can be worn upwards of 40 times, and that includes a soapy hand wash after each use. At $39 (in black or nude), that may or not be a worthwhile purchase, depending on how often you wear skin-bearing styles and if it can support your cup size.

So who does it actually work for?

A cursory Insta-study shows us that the clever little cleavage creator may best be suited to smaller to medium sized busts.

While it's kind of amazing how it stays on and enhances your natural curves, and it's definitely an alternative to going completely braless, if you need more support, the Sneaky Vaunt may not be the best solution for you.

But, if skimpy styles are your thing and you want some extra oomph (without freeing the nipple), you may have just met your ideal match. Strappy, backless, and shoulder-baring styles for summer, here you come!